Simulated functional-system demonstrator



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SIMULATED FUNCTIONAL-SYSTEM DEMONSTRATOR Filed March 16, 1959 19 Sheets-Sheet l INVENTOR. WA). TE R FR IED 17 BIYEXS Aug. 7, 1962 w. FRIED 3,047,964

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SIMULATED FUNCTIONAL-SYSTEM DEMONSTRATOR Filed March 16, 1959 19 Sheets-Sheet 14 258 MOTOR.

CHANNEL SELECTOR CIRCUIT PREPARHTORY RELAY SIMULATOR.

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SIMULATED FUNCTIONAL-SYSTEM DEMONSTRATOR Filed March 16, 1959 19 Sheets-Sheet 18 z 4/ /v 0 P IQ w p STEPPER RELAY )ZELEHSE BYPASS RELAY SPKING RELEASE SOLENOID RELAY COIL FTalE e INVENTOR. WAL TE)? FR IED wwi zw NEYS 1962 w. FRIED 3,047,964

SIMULATED FUNCTIONAL-SYSTEM DEMONSTRATOR Filed March 16, 1959 19 Sheets-Sheet 19 8 TE PPEB LI GH RELEASE RELAY LIGHT x JTEPPER EELEQSE RELAY CHANNEL SELECTOR STEPPER 302 SIMULATOR INVENTOR. WALTER FRIED United States Patent 3,047,964 SIMULATED FUNCTIONAL-SYSTEM DEMONSTRATOR Walter Fried, Huntington, N.Y., assignor, by mesne assignments, to the United States of America as represented by the Secretary of the Navy Filed Mar. 16, 1959, Ser. No. 799,826 3 Claims. (Cl. 35-10) 'whose working parts are obscured.

For example, in teaching students the structural and operational details of a radio transmitter having an automatic frequency-channel selection system which is actuated by a telephone dial switch, it is highly advantageous to be able to visually demonstrate the sequence of operations and the action of components involved in changing the transmitter frequency.

The present invention comprises a device permitting visual demonstration of the structure and operation of a functional system. The device may consist of a panel which visibly supports elements simulating the component units form-lug a specific functional system in a given device, such as an automatic channel selection system in a radio transmitter.

These simulative elements may be pictorial or schematic representations, fabricated structures, or a combination of both of these. However, the operating parts of the components which the elements simulate comprise operative fabricated structures. Thus, the coil of a relay may be schematically represented but the moving parts are represented, for example, by fabricated levers and connecting links.

The connections between elements may be represented schematically or by fabricated structures. Thus, Wires connecting various relays may be shown by colored paint lines, and the hydraulic lines in an automotive braking system may be illustrated by fluid-carrying plastic tubes.

Finally, mechanical or electrical components are pro vided to actuate the operative fabricated structures in simulation of the operation of the components in the actual functional system.

Another example of a specific application of this invention is in the visual demonstration, for the benefit of student mechanics, of the sequence of operations and the action of component units of the braking or ignition systems of an automobile.

An object of the invention is the visual demonstration of the operation of a functional system in a machine or other device.

Another object is the visual demonstration of the operat-ion of the component units of a functional system.

A further object is the visual demonstration of the operation of an automatic channel selection system in a radio transmitter.

Yet another object is the visual demonstration of the operation of a functional system in a machine or other device by means of a schematic arrangement of simulated components.

Other objects and many of the attendant advantages of 3,047,954 Patented Aug. 7, 1952 this invention will be readily appreciated as the same becomes better understood by reference to the following detailed description when considered in connection with the accompanying drawings wherein:

FIG. 1 is a pictorial representation of the front panel of an embodiment of the invention which visually dem onstrates the automatic channel selection system for a TDC radio transmitter, and

FIG. 2 is a schematic diagram of the circuit employed to operationally connect the components of the channel selection system illustrated in FIG. 1,

FIG. 3 is a plan view showing a typical relay animation assembly as seen from the rear of the panel,

FIG. 4 is a fragmentary plan view of the front panel showing the dial and finger-stock lock,

FIG. 5 is a side view showing the dial assembly,

FIG. 6 is a cross-section of the dial assembly taken along the line AA in FIG. 5

FIG. 7 is a cross-section of the dial assembly taken along the line B-B in FIG. 5,

FIG. 8 is a rear view of the dial assembly,

FIG. 9 is a plan view of the stepper and release mechanism gearing as seen from the front,

FIG. 10 is a side view of the stepper and release mechanism assembly,

FIG. 11 is a rear view of the stepper and release mechanism showing the stepping and return motors,

FIGS. l2a-zi are schematic circuit diagrams showing the lights, relays and switches associated with the telephone dial, and

FIGS. 1311-1 are schematic circuit diagrams showing the wiring of the relay, relay motor and stepper-andrelease mechanism circuits. Cor-responding lines in the several drawing figures of FIGS. l2a-l2d and FIGS. 1311-13 are identified on the drawings by corresponding lower case letters of the alphabet.

GENERAL FIG. 1 illustrates an embodiment of the invention which visually demonstrates the operation of the components of a dial-operated, automatic channel selection system. The particular system chosen is that used in the Navy Type TDZ radio transmitter, although the selection of a specific system for demonstration is a matter of choice.

In the TDZ transmitter, there are ten pre-determined frequency channels. The positions of the tuning elements differ for different frequencies and are varied by means of a motor which is controlled by a selsyn. Actuation of this selsyn is effected by a telephone dial-and-relay system. Full details of the TDZ transmitter are available in the Instruction Book for the Navy Model TDZ Radio Transmitting Equipment, NAVSHIPS 900, 809, published by the Bureau of Ships, Navy Department, in September 1945.

The schematic panel 19 of the visual demonstrator it) supports schematic and fabricated representations of the components and wiring of the automatic dial system of the transmitter. The components comprise an oversized mock-up of a telephone dial mechanism 12 with a fingerstop lock 14 for holding the dial 11 in the beforereleasing position, an impulse relay 16, a channelselector timing relay 18, a channel-selector clearance relay 20, a channel-selector circuit-preparatory relay 22, a channel-selector stepper relay 24, a channel-selector stepper release relay 26, and a pair of stepper-relay wafer simulator 28 and 30.

The relay coils 32 are schematically represented on the panel 19, as are also the interconnecting wires 34 and the step contact terminals 36 on the stepper-relay wafer simulators 28 and 30. The pointers 38 of the wafer simulators 28 and 30 and the relay armature simulators 40 are fabricated parts made from rigid material, such as 

